Rock-crushing machine



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I. GODFREY. I Rock Crushing Machine. No. 242,445. Patented June 7,1881,

WITNESSES ATTORNBYJ" UNITED STATES PATENT OEFicE.

FREEMAN GODFREY, OF GRAND RAPIDS, MICHIGAN.

ROCK-CRUSHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 242,445, dated June 7, 1881.

Application filed March 7, 1881.

To all whom it may concern:

Be it known that I, FREEMAN GODFREY, of Grand Rapids, in the county of Kent'and State of Michigan, have invented certain new and useful Improvements in Rock-(Jrushing Machines; and I do hereby declare thatthe following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to machines for crushing rock, ore, and the like; and its object is to produce a machine in which shall be combined the elements of great strength and durability, ease in repairing, compactness, and great crushing capacity, and which shall be capable of being operated by the least possible expenditure of power.

To these ends my invention consists in the improved construction, arrangement, and combination of parts, which will be hereinafter full y described, and particularly pointed outin the claims.

In the drawings hereto annexed, Figure 1 is a frontview, the side of the bed-frame having been removed to show the construction. Fig. 2 is an end view. Fig. 3 is a detail end view of the crank-frame. Fig. 4 is a top view of the bed-frame, the crushing-plates having been removed. Fig.5 is a side view of the bed-frame. Fig. 6 is an end view of the bed-frame. Fig. 7 is a side view of the pendulum or swinging 5 jaw-carrier. Fig. Sis a rear View of one of the crushing-plates. Fig. 9 is a side view of the same. Fig. 10 represents the connecting-bars by which the swinging jaw-carrier is connected with the operating-lever, and Fig. 11 is one of the chaieplates detached.

Corresponding parts in the several figures are denoted by like letters of reference.

In the drawings hereto annexed, A represents the bed-frame of the machine, which is made preferably of cast-iron, and consists of end pieces, B B, and side pieces, (3 O, suitably secured together. The side pieces, 0 G, are provided at their center with raised boxes or bearings fora shaft, D, carrying the swinging or oscillating jaw-carrier E, which is to be hereinafter more fully described.

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The ends of the rectangular box or bedframe A are provided upon their inner sides with angular slanting projections F, forming what I term the jaw-plate or crushingplate bearers. The said angular projections, which may be cast upon the frame ends, are provided with transverse trussbars G, serving the double purpose of strengthening the angle plates and supporting the crushing plates or jaws when the latter are placed in position.

The crushing-plates are heavy flat plates H, made preferably of cast-iron, and provided upon their outer sides with T-shaped lugs I, located in a central horizontal line, so that the plates, which are hung by means of these lugs or hooks upon the truss-bars G, may be reversed or turned end for end when the lower end, which is most exposed to wear, shall have been worn to such an extent as to make this change necessary. In this manner the expense of frequently renewing the crushing-plates is avoided.

The inner sides or the faces of plates H are, by preference, concave or corrugated, as shown in Fig. 1 of the drawings, so as to grasp the pieces of rock or ore firmly when the machine is in operation and reduce it to pieces of the desired size.

The oscillatingjaw-carrier E, which is mounted upon the shaft D, is approximately triangular or A-shaped in form, and consists, mainly, of two sets of angular jaw-bearing plates, J J, which may be cast together, as shown. The angle-plates J J face the similar plates F at the ends of the bed-frame, and are, like these, provided with transverse horizontal truss-bars K, upon which the crushing-plates L are hung, as shown. The latter are constructed in every respect like the plates H, and arein like manner provided with T-shapcd lugs ordouble hooks M.

N is a A-shaped frame, secured to or upon the ends of the bed-frame near one side of the latter, as shown, and consisting of two beams, O, forked at their upper converging ends, as clearly shown at P in Fi 3 of the drawings, and provided with boxes or bearings Q for a transverse shaft, It, to which motion may be imparted from the driving machinery in any suitable manner. The frame N, being arranged near one side of the box or bed-frame A, is not in the way of material being fed to the crushin g mouths orhoppcrs, the in iportance of which is obvious. The shaft R carries a fly-wheel, S, and it is provided with a crank, '1, working in the fork P of frame N.

The ends 13 of bed-frame A are provided upon their outer sides with studs U U, of sufficient strength to support the levers V W arranged at the ends of the frame. Said levers are at their lower ends nearly of the same width as the bed-frame, and are curved inwardly, as shown at X, so as to rest securely upon the studs U, which form the fulcrums of the levers. The upper ends of the levers decrease in width and range in a line with the sides of the bearing-frame N.

The lever V, which is the longer of the two, has its upper end connected by a pitman, Y, with the crank T of shaft R. Said pitman is provided with a stirrup-joint, Z, enabling its length to be adjusted as circumstances shall require, either to compensate for wear or to alter the stroke.

At points equidistant from their iulcrunis the levers VYV are connected by a thrust-rod or connectingrod, A, also formed with a stirrup-joint, B, in order to make it adjustable as to length.

The levers V \V are provided near their lower ends, but at points above or on a line with the points at which theyare turned in to rest upon the studs U, with openings or recesses C, in which are pivoted connecting-rods D E, the inner ends of which are pivoted to the lower end of the oscillatingjaw-carrier, be-' tween the angle-plates J constituting the latter. The said connecting-rods consist of flat narrow bodies F, having butt-ends G of sufficient width to fit snugly in the bearings provided for their reception. Owing to this e011- struction the said conneetingrods, which necessarily pass under the lower or discharge openings of the crushing-m ouths, do not in any way obstruct the discharge of crushed ore or rock, which is always crushed into smaller pieces than would be likely to be caughtor retained between the connecting-rods.

A hand-hole, I 1, isformed in each side of the bed-frame, to admit of the bearings of the connecting-rods D E being easily and conveniently lubricated.

Chat'e-plates 1, consisting of long narrow strips of steel or other suitable material, are inserted between the ends of the bed-frame and the butts of the levers V W, at the points where the latter bear against or upon the said frame ends, so as to prevent wear upon the latter. hen necessary, the said chafe-plates can be easily removed and new ones or additional ones inserted. The ends of the strips L M represent the pins or pivots connecting the said rods to the levers V W and the crushing-plate carrier E, respectively.

The operation of my invention is as follows: The rock or ore, which has been previously broken into pieces of such size as a man should be able to handle, is fed into the two months or hoppers formed by the crushing-plates H L H L, as shown. When power is applied to the shaft B so as to revolve the latter, it vibrates through the medium of pitman Y the lever V, which,through the medium of the connecting-rod or thrust-bar A, imparts a. similar motion to lever W. The conneeting-rods D E at the lower ends of the said levers thus serve to vibrate or oscillate the platecar' rier E, which thus is forced alternately toward opposite ends of the bed-frame, and alternatcly crushing the contents of the two hoppers, reducing it to pieces of such size as will readilypass through the narrow dischargeopenings between the lower ends of the crushing-plates. It will be observed that when the oscillating plate carrier, in the course of its vibrations, reaches the highest pointon either side, where the greatest crushing force is required, the lovers V W at the same time over hang their fulcrums to the greatest cxtentout of the vertical or perpendicular. To this position the said levers arrive with a sudden or rapid motion, serving practically to give the plate-carrier a blow or impetus, which I have demonstrated in practice to be very effective in crushing the rock or ore. The fly or balance wheel on shaft R serves, it is obvious, to carry the lovers over the point just indicated, and to give renewed impetus and power. The result is that my improved machine will crush the rock with very little power beyond that which is required to drive the machine alone.

The crushing-plates, being curved or corru gated, as shown,wi1l readily grasp and reduce the rock, and, when partly worn, may be reversed, as hereinbefore mentioned, so as to last a considerable time, even with constant wear. The importance and advantage of the chateplates 1 will also be readily understood.

From the foregoing description, taken in connection with the drawings hereto annexed, the advantages of my invention will be apparent to those skilled in the art to which it appertains. Its construction is simple and inexpensive, it is easily managed, exceedingly durable, and the machine is capable of turning out a very large amount of work with surprisingl y small attendance and power.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In arock-crushin g machine, the bed-frame A, provided upon the inner sides of its ends with slanting angular plates or projections F, having truss-bars G, in combination with the crushing-plates H, having T-shaped lugs I, substantially as herein described, for the purpose set forth.

2. The combination of the bed-frame A,-

having crushing-plates H, oscillating crushingplate carrier E, having crushing-plates L, connecting-rods D E, arranged under the discharge-openings of the mouths or hoppers, as described, and suitable operating mechanism, substantially as set forth.

3. The combination of the bed-frame A, having studs U U, crushing-plates H, oscillating crushing-plate carrie1-E,connectin g-rods DE, and the levers V WV, all constructed and operating substantiallyas herein described, for the purpose set forth.

4. In a rock-crusher constructed substantially as herein described, the com bination,with the bedframe A, having a pair of crushing months or hoppers, of the bearing-frame N, consisting of side beams, O, placed together A fashion and forked at their upper ends, as shown, said frame being arranged near one side of the bed-frame, as described, for the pupose set forth.

5. In a rock-crusher constructed substantially as described, the combination of the bedframe A, having studs U, levers V W, frame N, shaft B, having crank T and balance-wheel S, pitman Y, thrust-rod A, rods D E, and the swinging frame, all constructed, arranged, and

operating substantially as and for the purpose herein shown and specified.

6. The combination, with the bed-frame A, having studs U, of the levers V V and the chafe-platcs'l, substantially as herein described, for the purpose set forth.

7. The herein-described chafe-plates I I, provided at their ends with brackets or studs J, as and for the purpose herein shown and specified.

8. The herein-described improved machine for crushing rock, ore, &c., consisting, essentially, of the bed-frame A, having studs U U and inclined reversible crushingplates H, oscillating date-carrier E, having crushingplates L, chafe-plates I, levers V W, connecting-rods D E, bearing-frame N, shaft R, having crank T and balance-wheel S, pitman Y, and thrust-bar A, all combined, arranged, and operating substantially as herein described, for the purpose shown and specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

Witnesses: FREEMAN GODFREY,

ARTHUR 0. Tommy, EDWIN D. OAsWELL. 

